For the US market, the execution standards for new energy vehicle chargers are mainly developed and managed by the National Electrical Manufacturers Association (NEMA) and the National Standards Institute (ANSI). The following are some implementation standards for new energy vehicle chargers in the United States:
- SAE J1772: This is the charging interface standard developed by the Society of Automotive Engineers (SAE) for AC charging equipment. It specifies the connection methods, electrical parameters, communication protocols, and other requirements for plugs and sockets to ensure that electric vehicles of different brands and models are compatible with charging equipment.
- UL 2202: This is a standard developed by the US Safety Laboratory (UL) regarding the safety of AC and DC charging equipment. UL 2202 specifies the design, manufacturing, and installation requirements for charging equipment, including insulation performance, overload protection, grounding protection, etc., to ensure the safety of users during use.
- NEC Article 625: This is the chapter on the installation and use of new energy vehicle charging equipment in the National Electrical Code (NEC) of the United States. This chapter specifies the connection methods, cable laying requirements, fire and explosion prevention measures, and other specifications between charging equipment and building power supply systems to ensure the safety of charging equipment and compliance with electrical specifications.
- NIST Handbook 44: This is a manual on metrology and measurement published by the National Institute of Standards and Technology (NIST) in the United States, which includes requirements for metrology and testing methods for new energy vehicle charging equipment. This manual ensures the measurement accuracy and consistency of charging equipment to protect consumer rights. These implementation standards play an important role in the US market, ensuring that new energy vehicle chargers meet certain technical requirements and safety standards during design, manufacturing, installation, and use. Following these standards can improve the interoperability, safety, and reliability of new energy vehicle chargers, and promote the development of the new energy vehicle market. It should be noted that each state in the United States may have different regulations and requirements. Therefore, when selecting, installing, and using new energy vehicle chargers, it is recommended to follow local regulations and standards, and consult professionals to ensure compliance with local requirements.